Filmmaker Ali Abbas Zaffar is ready with his next project 'Tiger Zinda Hai' but says the film wasn't written as a sequel to 'Ek Tha Tiger'.'Ek Tha Tiger', released in 2012, was directed by Kabir Khan and featured Salman Khan and Katrina Kaif as agents.

The second installment of the action-drama is helmed by Ali, who previously directed 'Sultan'."When I wrote this film, it wasn't like a sequel. I first wrote the story and felt it was worth telling. I thought since it's about two agents and we already had a film about two agents with Salman and Katrina, I'll merge these two in this story so that it becomes a story of two characters which people already know," Ali told reporters here.